Minor fix on single-file example readme.
Minor fix on single-file example readme.

prepor/catacumba,funcool/catacumba,coopsource/catacumba,mitchelkuijpers/catacumba,mitchelkuijpers/catacumba,prepor/catacumba,funcool/catacumba,funcool/catacumba,coopsource/catacumba